Two years building a new life, Alejandro de la Reño faces a new tragedy. A close friend has disappeared and is found dead four days after, hidden behind the university covered courts with the murderer still out there. Failing one friend before, Alejandro decides to search for the real reason as to the murder. Trailing the suspects of the murder, Alejandro plunges himself into dark water. The Black Harlequin, the prostitution and drug cartel so old and so powerful has corrupted, as Alejandro accidentally discovers, not only the city but the whole nation. As he delves deeper into the mystery, his fears of the former tragedy he has experienced haunts him more than ever. With proof that can not only bring the destruction of his school, but that of the city and his country as well, Alejandro must choose which side he must belong. And with not a moment to lose, for it is not only the murderer who has gotten his scent and who is ready to kill anyone who interferes.